Water-level indicator



R. KLINGER WATER LEVEL ninIcAToR Filed Oct. 26, 1922 2 Sheets-Sheet 1 Feb. 16,1926. 1, 73 119 Feb. 16 {1926. 1,513,719

R. KLINGER WATER LEVEL INDICATOR Filed 051.. 26, 1922 2 Sheeits-$heet 2 7\ W/ J T 8 1 d A (j l Patented Feb. 16, 192

* UNITED STATES 1,573,71e PATENT orrics,

RICHARD KLINGER, or GUMPOLDSKIRCHEN, AUSTRIA, ASSIGNOR TO THE, FIRM or RIQI-I. KLINGER ens. B. It, or enmrorinsxrncnnn, AUSTRIA, A CORPORATION OF AUSTRIA.

WATER-LEVEL INDICATOR.

Applicationfiled October 28, 1922. Serial No. 597,225.

To all whom it may concerm l Be it known that I, RICHARD KLINGnIg a citizen of the Czechoslovakian Republiqand I residing at Gumpoldskirchcn, Austiiafliave inventedcertain new and useful Improve ments in ater-Level Indicators, of which the following is a'specitication.

This invention relates to water-level indicators of the type embodying a sight glass member and of the kinds used onv steam boilers and the like for indicating the level of water therein. The vinvention contemplates theprovision of a water level indicator which allows swiveling movement 7, of the sight glass member on'its .longltudinal axis and also. variation of the angular posi tion of the cock shells relatively to the sight glass member without damaging the packing or" otherwise injuring the water-level indicator. v

Provision for swivelling the sight glass member on its longitudinal axis is desirable in water-level indicators of the type wherein the sight glass is enclosed in'ja non-transparent protecting casing provided with a one side thereof,

provided with a reflecting surface for illuminating it, swivelling of thesight glass member enabling the glazed sight openlng.

or the reflecting surface thereof to be brought into the path of a. beam of light coming inany direction from a suitable source and hence enabling the attendant to obtain proper reading of the level of the water. a

By providing for variations in theangula r position of the cock shells relatively to the sight glass member, due to warping of the boiler'shell or other causes, the present invention enables va watertight joint to be maintained at all times between the cock shells and the sight glass member, regardless of the angular position of the cock shells relatively to the water-level glass, thus overcoming the disadvantage found to exist in water-level indicators of the kindsheretofore used, namely, theimpossibility of ensuring a tight j oint between the cock shells and sight glass member for more than a short time, whereas the joining surfaces of the cock shells and the sight glass member, according to the present invention, are soconstructed as to maintain a tightjoint between them, notwithstanding variations in the angularity'of the cock shellsrelatively to the sight glass member may take place due to the 'unavoidablewarping of the boiler shell. l

In constructing a water-level indicator in accordance with the preferred form of the invention, the sight glassmember is connected at its endsto the two'cocl: shells by nipples on the cock shells which act as pivots about which the sight glass-member may swivel on its longitudinal axis, each of these nipples projecting loosely through a hollow split nut which is threaded into the c respective end of the sight glass member and presses a flangeformed-on the respec- 13118'111131316 against a packing-r ng which is preferably inserted between said flange anda seat formed in the respective end of the sight glass member. The face of the flange of the nipple which is engaged by the nut and also the face thereof which engages thepacking ring are parallel and 7 spherical, and also, the seat inthe end of the sight glass member which is engaged by the packing ring: has a complementalfv spliericahform. The oint-s thus formed between the cock shells and'the sight glassmemberfnot only permit swivelling of the latter without disturbing the tight fit at such joints, but such joints also-compensate for variations in the angularity of the cock shells relatively to thesight glassmem- 7 her, due to'warping or distortion of the w boiler shell to which the cock shells are at tached and yetyavoid leakage at such joints.

, v In the drawings Figure l is an elevation of a water-level indicator constructed in accordance with the present invention, the cock shells and their nipples being shown in the position which they may assume relatively to the'sight glass member, due to warping of the boiler shell, the nipples ofthe cock shells being then deflected. out of alinement with the longis tudinal axis of the sight glass member; and

Figure 2 is a detail view on an enlarged scale and partly in section, of the lower cock shell and the lower part of the sight glass member.

. Figure 3 is a sectional view, on an en-' larged scale, of one of thecock shell nipples The fittings or cook shells a are each provided with a water-level cock is, and a flange Z by which they are fixed to the boiler shell,

the cock shellscbeing provided with nipples 0 which act pivots about which the sight glass memher b may swivel on its longitudinal axis for the purpose hereinhefore described, these nipples projecting into sockets f formed in the upper and lower ends, respectively, of the sight glass member. Each nipple is formed with a terminal peripherallvprojecting flange (Z having upper and lower parallel spherical faces, and each nipple is surrounded by a hollow axially.

split nut 6 c which is screwed into the socket 7" in the respective end of the sight member. The seat 9 in the socket 7 of this member is likewise of spherical form and the pacl'ring ring h which is inserted between it and the upper face of the flange (Z, under the pressure of the tightened screw c 6 produces a fluid-tight joint between the respective. nipple of the cock shell and the sight glass member which remains permanently fluid-tight notwithstanding that the sight glass member may be rotated, and also and more particularly, it inaintainsa permanently fluid-tight joint notwithstanding eviations of the cock shells into angular po. ons relatively to the sight glass mem- \er, as illustrated, for example, in Fig. 1, the universal joints thus provided between the ends of the sight glass member and the nipples of the cock shells compensating for such angular movements as may take place between the parts I claim 1. A water level indicator comprising two cock shells each having a flange by which it may be ecnrcd to a boiler shell, each of said cock shells also being provided with a nipple, a sight glass member having a socket formed in each of its ends to receive one of said nipples and to permit said sight glass member to swivel on its longitudinal axis, each of said nipples being formed with a tern'i'inal peripherally projecting flange having upper and lower parallel spherical faces, a hollow longitudinally split nut surrounding each nipple and scre *e-d into the socket of the sight glass member into which its associated nipple extends, each socket oi the sight glass member having a seat of spherical form, and means for forming a pern'ianentl tiuid-tight joint hetween each of said sockets and. the flange or its associated nipple irrespective of angular devia tions of the cock shells relatively to the si ht glass member.

A water level indicator comprising a lit glass member having sockets in its ls, each socket being formed with a spherical seat, a pair of cock shells for attz hing the indicator to a boiler, each shell having a nipple projecting into one of the sockets of said member and formed rith a l. peripherally projecting flange havi l-Gl'lcfilijf constructed upper and lower surfaces complemental with the. seat of such socket, and means for forcing the flange or each nipple towards its seat produce a fluid-tight joint.

In testimony whereof I aliis my signature.

RICHARD KLINGER. 

